CN106029321A - Rigid core for tire formation and tire production method using same - Google Patents
Rigid core for tire formation and tire production method using same Download PDFInfo
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- CN106029321A CN106029321A CN201580009542.8A CN201580009542A CN106029321A CN 106029321 A CN106029321 A CN 106029321A CN 201580009542 A CN201580009542 A CN 201580009542A CN 106029321 A CN106029321 A CN 106029321A
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- Prior art keywords
- core
- tire
- core section
- building
- joint unit
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0661—Rigid cores therefor, e.g. annular or substantially toroidal cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/10—Building tyres on round cores, i.e. the shape of the core is approximately identical with the shape of the completed tyre
- B29D30/12—Cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
- B29K2105/246—Uncured, e.g. green
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2905/00—Use of metals, their alloys or their compounds, as mould material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Tyre Moulding (AREA)
Abstract
Provided is a rigid core for tire formation that limits the biting of rubber between core segments in a core production method while minimizing the occurrence of unevenness in the radial direction between core segments that is caused by thermal expansion. A core main body (2) is divided into: a first core segment (5A) in which both circumferential end surfaces (5As) are inclined radially inward in a direction in which the circumferential width increases; a second core segment (5B) that is arranged in an alternating manner with the core segment (5A) and in which both circumferential end surfaces (5Bs) are inclined radially inward in a direction in which the circumferential width decreases; and a butting member (6) that is arranged between the first core segment (5A) and the second core segment (5B). The Young's modulus (Ea) of the butting member (6) is smaller than the Young's modulus (Eb) of the first and second core segments (5A, 5B).
Description
Technical field
The present invention relates to can to suppress in core processing method the engagement of the rubber between core section and can suppress by
Rigid core for building that the tire of the ladder difference of the radial direction produced between core section that thermal expansion causes is formed and making
With the tire manufacturing method of this rigid core for building.
Background technology
In recent years, in order to improve the formation precision of tire, and propose use rigid core for building tire manufacturing method (with
Under be sometimes referred to as " core processing method ".) scheme (referring for example to patent documentation 1,2.).This rigid core for building has
Core body, this core body has the profile shape corresponding with the shape in the tyre cavity face of the tire completing sulfuration
Shape, forms green tire by pasting tire component member successively in this core body.And by by this green tire with just
Property core put into together in sulfurizing mould, thus be held on the core body as interior mould with as the vulcanizing mold of external mold
Between tool, thus green tire is carried out sulfidization molding.
As shown in Fig. 8 (A), in described core processing method, in order to the tire after sulfidization molding takes out core
Main body a, described core body a is divided into multiple core sections c of circumference.
Described core section c the 1st core section that the circumferential width of face sc1 is less with using circumference both ends of the surface as the 1st
C1 and using circumference both ends of the surface as the 2nd coordinate face sc2 circumferential width bigger the 2nd core section c2 constitute.And
By making the 1st, the 2nd the most adjacent cooperation face sc1, sc2 dock each other, thus described core body
A is formed as ring-type.
Described 1st coordinates face sc1 to be formed as flare inclined-plane, and the 2nd coordinates face sc2 to be formed as introversion inclined-plane, wherein,
This outer incline tilts facing to inside radial direction to the direction that circumferential width increases, and this is tilted facing to radius side
Tilt to the direction that circumferential width reduces to inner side.Thereby, it is possible to one by one to radius side from the 1st core section c1
Take out to medial movement.I.e., it is possible to decompose core body a and take out from tire.
But in described core body a, temperature room temperature state (about 15 DEG C～50 DEG C) when green tire is formed
Rise to the condition of high temperature (more than 100 DEG C) during sulfidization molding.Therefore, when carrying out sulfidization molding, due to thermal expansion
And between the most adjacent core section c1, c2, produce extruding force.Now as shown in Fig. 8 (B), coordinate face sc1
The 1st core section c1 for flare inclined-plane is extruded inside radial direction, and additionally coordinating face sc2 is introversion inclined-plane
2nd core section c2 is extruded outside radial direction.Its result is, the 1st, outside the 2nd core section c1, c2
Ladder difference d of radial direction is produced, the problem producing the uniformity reducing tire between side face.
In order to reduce described ladder difference d, the gap value between face sc1, sc2 that coordinates proposing to increase under room temperature state comes
The scheme of extruding force during reduction sulfidization molding.But in this case, in sulfidation, rubber is flowed into described
Produce rubber engagement etc. in gap and cause the reduction of tire quality.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2011-161896 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2011-167979 publication
Summary of the invention
The problem that invention is to be solved
The problem of the present invention is to provide a kind of suppression rubber engagement and can suppressing to produce the 1st, the 2nd core section it
Between radial direction ladder difference it is thus possible to improve tire uniformity tire formed rigid core for building and make
With the tire manufacturing method of this rigid core for building.
For solving the means of problem
The present invention is a kind of rigid core for building, and it has ring-type core body, and this ring-type core body has at outer surface
There is the tire building face forming green tire, and, by described rigid core for building is put in sulfurizing mould together with green tire,
Thus between this sulfurizing mould and core body, described green tire is carried out sulfidization molding, it is characterised in that
Described core body is divided into multiple 1st core section, the 2nd core section and is configured at the described 1st, the 2nd
Joint unit between core section, wherein, the circumferential both ends of the surface of the 1st core section are towards inside radial direction and to week
Tilt to the direction that width increases, the circumferential both ends of the surface of the 2nd core section towards inside radial direction to circumferential width
The direction reduced tilts, and is alternately arranged in the circumferential with described 1st core section,
Further, the core section of the side during described joint unit is fixed in the 1st adjacent core section and the 2nd core section
Circumferential end faces, and,
Young's modulus Ea of described joint unit is less than Young's modulus Eb of described 1st core section and the 2nd core section.
Invention effect
As illustrated by the present invention, make joint unit between the 1st core section and the 2nd core section.Should
Young's modulus Ea of joint unit is set as less than Young's modulus Eb of the 1st core section and the 2nd core section.Thus,
Can be absorbed by described joint unit compression and relax between the core section produced by thermal expansion when vulcanizing
Extruding force.Thus, it is possible to reduce the 1st, the ladder of radial direction that produces between the 2nd core section poor, it is possible to carry
The uniformity of high tire.
It addition, described joint unit is fixed on the core section of the side in the 1st core section and the 2nd core section.Therefore,
The operation splitting of core body can be maintained into level as in the past.In addition, it is not necessary that expand joint unit with
Gap between the core section of the opposing party, therefore, it is possible to suppression produces rubber engagement.
Accompanying drawing explanation
Fig. 1 is the sectional view of the vulcanization process in the manufacture method of the tire illustrating the present invention.
(A), (B) of Fig. 2 is the axonometric chart of core body and is exaggerated part thereof of partial side view.
(A), (B) of Fig. 3 is axonometric chart and the side view of the stationary state illustrating joint unit and a core section.
Fig. 4 is the side view of the decomposition that core body is described.
Fig. 5 is the scattergram of the extruding force in the circumferential end faces of core section.
Fig. 6 is the sectional view illustrating to be caused the convex trace produced at tire curing inner surface by joint unit.
(A) of Fig. 7 is the side view of other the fixing example illustrating joint unit, and (B) of Fig. 7 is to illustrate type
The side view of other example of core section.
(A) of Fig. 8 is the side view of conventional core body, and (B) of Fig. 8 is the product illustrating and amplifying ladder difference
The side view of raw state.
Detailed description of the invention
Hereinafter embodiments of the present invention are described in detail.
As it is shown in figure 1, the rigid core for building 1 that the tire of present embodiment is formed has ring-type core body 2, should
Core body 2 has tire building face S at outer surface.By pasting carcass ply successively on the S of this tire building face
The tire component member such as layer, belt ply layer, sidewall rubber, tread-rubber, thus formed and finished tire substantially phase
The green tire T of similar shape.It addition, by described green tire T is put in sulfurizing mould B together with rigid core for building 1,
Thus the core body 2 as interior mould and as the sulfurizing mould B of external mold between described green tire T is vulcanized
Molding.Described tire building face S-shaped becomes the inner surface configuration same shape with finished tire.
Described rigid core for building 1 is configured to comprise ring-type described core body 2 and the interior cylinder inserting in wherein central hole 2H
The iron core 3 of shape.In addition to described core body 2, it is possible to use conventional known features.Thus, in this explanation
In book, described core body 2 is the most only described.
The core body 2 of this example is formed as the hollow with the inner cavity 4 extended the most continuously therein
Shape, is configured with the heating unit such as such as electric heater that described green tire T carries out inner side heating in described inner cavity 4
(not shown).
As shown in Fig. 2 (A), (B), described core body 2 be divided into be alternately arranged in the circumferential multiple 1st,
2nd core section 5A, 5B and the joint unit 6 configured betwixt.The circumferential two ends of described 1st core section 5A
Face 5As tilts (being sometimes referred to as " outer incline ") towards inside radial direction to the direction that circumferential width increases.With this
Relatively, circumferential both ends of the surface 5Bs of the 2nd core section 5B are towards the direction reduced to circumferential width inside radial direction
Tilt (being sometimes referred to as " tilted ").It addition, circumferential both ends of the surface 6s of described joint unit 6 are parallel to each other, i.e.
Become the tabular that circumferential thickness t is approximately fixed.
Described joint unit 6 is fixed on the week of the core section of the side in adjacent 1st, the 2nd core section 5A, 5B
To end face.In this example as shown in Fig. 3 (A), (B), each joint unit 6 uses the such as Screw 8 etc. can
Change ground and be fixed on circumferential end faces 5As of the 1st core section 5A.The most in this example, the 1st core section 5A is formed as
The composite core section 9 engaged with joint unit 6,6 one.
Thus as shown in Figure 4, in this example, by making circumferential end faces 9s and the 2nd core section of composite core section 9
Circumferential end faces 5Bs of 5B is mutually butted, and can be combined into ring-type by core body 2.It addition, combining
In core body 2, it is possible to successively to radial direction medial movement from described composite core section 9.That is, sulfidization molding
After, it is possible to decompose one by one from tire curing tyre bead hole successively from composite core section 9 and take out.The most described ferrum
Core 3 stops each core section 5A, 5B movement inside radial direction, and the core body 2 combined is kept cyclization
Shape.
Then, Young's modulus Ea of described joint unit 6 is set as than described 1st, the 2nd core section 5A, 5B
Young's modulus Eb little.
Here, produce as described below by thermal expansion cause the 1st, the 2nd core section 5A, radius side between 5B
To ladder difference d (Fig. 8 (B) shown in).Due to heat of vulcanization during sulfidization molding, in core body 2, not only
It is in the radial direction and the most also to produce thermal expansion.Further, due to the thermal expansion of this circumference, to the 1st,
2nd core section 5A, circumferential end faces 5As of 5B, 5Bs effect have circumferential extruding force.Now, circumferential end faces 5As,
5Bs is respectively outer incline and tilted.Its result is, the 1st core section 5A of outer incline is squeezed inside radial direction
Going out and misplace, the 2nd tilted core section 5B is extruded outside radial direction and is misplaced.Produce due to this dislocation
Described ladder difference d.It addition, the extruding force of circumference the most described the highest ladder difference d is the biggest.
In the present invention, the joint unit 6 that Young's modulus Ea is less between the 1st, the 2nd core section 5A, 5B it
Between.Thus, it is possible to by the compression of described joint unit 6 absorb relax by circumference thermal expansion produce to type
Core section 5A, the extruding force of 5B.
On the other hand, described core body 2 is formed as the inner surface configuration same shape with finished tire, because of
This carries out intricately thermal expansion.That is, when making core section 5A, 5B, even if by each circumference end under room temperature state
In the case of face 5As, 5Bs are processed into plane, under curing temperature state, circumferential end faces 5As, 5Bs also deform
Become curved, the skewness of extruding force.Fig. 5 illustrate be not provided with extruding force in the case of joint unit 6 point
One example of cloth.This figure be make when room temperature state (20 DEG C) circumferential end faces 5As, 5Bs be plane and end face 5As,
The core body 2 (not forming inner cavity 4) of the aluminum being spaced apart 0.07mm (fixing) of 5Bs rises to sulfuration temperature
The distribution of the extruding force between end face 5As, 5Bs during degree (150 DEG C).Illustrate along with darkening and pressure increasing
Greatly.
The skewness of extruding force like this, therefore in the case of clipping joint unit 6, the pressure of joint unit 6
The distribution of compression deformation is the most uneven.Thus, circumferential thickness t of joint unit 6 cross thin in the case of, compression
Ratio relative to thickness t is excessive, has the trend causing damage on joint unit 6.From such a viewpoint,
The most described thickness t is more than 1.0mm, more preferably more than 4.0mm.It addition, at the thickness of joint unit 6
In the case of t is blocked up, as shown in Figure 6, the rubber G during the radial direction outer face of joint unit 6 cures
Pressure pressing and cave in inside radial direction than tire building face S.Its result is, in vulcanized tyre T
Surface produces convex trace 20, causes the trend reducing tire quality.From such a viewpoint, the most described thickness t
It is below 10.0mm, more preferably below 6.0mm.
It addition, Young's modulus Ea of described joint unit 6 is preferably described 1st, the 2nd core section 5A, 5B
Less than the 10% of Young's modulus Eb.If described Young's modulus Ea exceedes the 10% of Young's modulus Eb, then dock
The absorption alleviation effects of extruding force is diminished by parts 6, it is difficult to fully between suppression the 1st, the 2nd core section 5A, 5B
Ladder difference d.
From the viewpoint of the inhibition of ladder difference d, the preferably ratio Ea/ of Young's modulus Ea and Young's modulus Eb
Eb is the smaller the better.But, if Young's modulus Ea self is too small, then the rubber during joint unit 6 cures
The pressure pressing of G and cave in a concave shape, there is the inner surface at vulcanized tyre T and cause the trend of described convex trace 20.
On the contrary, even if Young's modulus Ea self is excessive, it is also difficult to compression, the inhibition of ladder difference d is reduced.From
From the viewpoint of so, the lower limit of Young's modulus Ea is preferably more than 0.1GPa, more preferably more than 0.4GPa,
The upper limit is preferably below 2.0GPa, more preferably below 1.0GPa.
As the material of conventional core body, typically make from viewpoints such as endurance, operability, energy efficiencies
With lightweight metal materials such as such as aluminum or its alloys (aluminium alloy).Also from same in the core body 2 of the present invention
Viewpoint is set out, as the 1st, the 2nd core section 5A, the material of 5B, it is possible to preferably employ such as aluminum or its alloy (aluminum
Alloy) etc. lightweight metal material.
On the other hand, as the synthetic resin material of joint unit 6, preferably thermostability, such as, can enumerate silicones
(silicone rubber), allyl resin, polyamide-imide resin, fluororesin, polyphenylene sulfide (PPS), poly-to benzene
Naphthalate resin (PET) etc..One example of its Young's modulus is shown in Table 1.It is as shown in the table, as
Young's modulus Ea can enumerate fluororesin, allyl resin at the material of the scope of 0.1GPa～2.0GPa.
Table 1
Show the situation of circumferential both ends of the surface 5As that joint unit 6 is fixed on the 1st core section 5A in this example.
However, it is also possible to joint unit 6 to be fixed on circumferential both ends of the surface 5Bs of the 2nd core section 5B.It addition, such as Fig. 7
(A) shown in, it is also possible to joint unit 6 is individually fixed in the circumference one side side of the 1st core section 5A (in the drawings
Right side) end face 5As and the end face 5Bs of circumference one side side (be in the drawings right side) of the 2nd core section 5A.
It addition, in described core body 2, described inner cavity 4 is discontinuous in the circumferential, as in Fig. 7 (B) with
1st core section 5A illustrates like that for representative, it is also possible to closely formed in the inside of core section 5A, 5B, i.e.
Inner cavity 4 is not in circumferential end faces 5As, 5Bs and inner peripheral surface upper shed.In this case, as described heating
Unit can use steam etc. to add hot fluid, and this adds hot fluid and is flowed into each inner cavity 4.
Then, the manufacture method of tire has green tire formation process and vulcanization process.In green tire formation process, pass through
The tire building face S of described rigid core for building 1 pastes such as casingply, belt ply layer, sidewall rubber successively
The tire component member such as glue, tread-rubber, thus form green tire T.It addition, in vulcanization process, as it is shown in figure 1,
Carry out in the green tire T obtained by described green tire formation process is put into sulfurizing mould B together with rigid core for building 1
Sulfidization molding.
Above, the particularly preferred embodiment of the present invention is described in detail, but the invention is not restricted to diagram
Embodiment, it is possible to be deformed into various mode and implement.
Embodiment
In order to confirm the effect of the present invention, having manufactured experimently tire size according to the structure of Fig. 2 and the specification of table 2 is 195/
The core body 2 that the pneumatic tire of 65R15 is formed.Further, to when using this core body 2 to form pneumatic tire
Time core section 5A, the generation situation, right of ladder difference d (as shown in Fig. 8 (B)) of radial direction between 5B
Connect the generation situation of convex trace 20 (as shown in Figure 6) on position, the generation shape of the engagement of the rubber on docking location
Condition and maintainability are evaluated.
Use aluminum (Young's modulus Ea=71GPa, coefficient of thermal expansion=2.38 × 10-5/ degree) as the 1st, the 2nd type
Core section 5A, 5B.It addition, use the synthetic resin material of the thermostability of table 1 record as joint unit 6.Green tire
The temperature of the core body 2 during formation is 20 DEG C, and the temperature of the core body 2 during sulfuration is 150 DEG C.It addition, 20
The gap between interface at DEG C is 0.15mm.It addition, in addition to table 2 is recorded, be essentially identical rule
Lattice.
(1) the generation situation of ladder difference:
The the 1st, the 2nd on the equatorial plane when core body being heated to 150 DEG C is measured with scale-type dial gauge
The ladder of the radial direction between core section is poor, and the measured value with index assessment.Numerical value the least ladder difference is the least just
The best.
(2) the generation situation of convex trace:
Observe the inner surface of the tire after sulfidization molding, make the width of convex trace on docking location and the product value of height
Change, and evaluated with index.Numerical value the least convex trace is the least the best.In addition evaluating is in the early stage the (the 1st
Individual tire) carry out.
(3) the generation situation of rubber engagement:
Observing the inner surface of the tire after sulfidization molding, the quantity making the rubber on docking location engage quantizes, and uses
Index is evaluated.The engagement of numerical value more small rubber is the fewest the best.This evaluation from outside is in the early stage (the 1st tire)
Carry out.
(4) maintainability:
Each core body is used to define the tire of 100 days (15000) with 1 day job schedule of 150.Will
The replacing number of times that the damage of joint unit now causes quantizes, and is evaluated with index.The least replacing of numerical value
Number of times is the fewest the best.
Table 2
It is as shown in the table, in an embodiment, it is possible to confirms: can suppress rubber engagement and can suppress the 1st, the 2nd
Ladder is produced poor on radial direction between core section.
Label declaration
1: rigid core for building；2: core body；5A: the 1 core section；5B: the 2 core section；6: joint unit；
B: sulfurizing mould；S: tire building face；T: green tire.
Claims (5)
1. the rigid core for building that tire is formed, it has ring-type core body, and this core body is at outer surface
There is the tire building face forming green tire, and, by described rigid core for building is put into sulfurizing mould together with green tire
In, thus between this sulfurizing mould and core body, described green tire is carried out sulfidization molding, it is characterised in that
Described core body is divided into multiple 1st core section, the 2nd core section and is configured at described 1st core section
And the joint unit that the 2nd between core section, wherein, the circumferential both ends of the surface of the 1st core section are towards inside radial direction
And tilt to the direction that circumferential width increases, the circumferential both ends of the surface of the 2nd core section towards inside radial direction to week
Tilt to the direction that width reduces, and be alternately arranged in the circumferential with described 1st core section,
Further, the core section of the side during described joint unit is fixed in the 1st adjacent core section and the 2nd core section
Circumferential end faces, and,
Young's modulus Ea of described joint unit is less than Young's modulus Eb of described 1st core section and the 2nd core section.
The rigid core for building that tire the most according to claim 1 is formed, it is characterised in that
Circumferential thickness t of described joint unit is in the scope of 1.0mm～10.0mm.
The rigid core for building that tire the most according to claim 1 and 2 is formed, it is characterised in that
Young's modulus Ea of described joint unit is Young's modulus Eb of described 1st core section and the 2nd core section
Less than 10%.
4. the rigid core for building formed according to the tire according to any one of claims 1 to 3, it is characterised in that
Young's modulus Ea of described joint unit is in the scope of 0.1GPa～2.0GPa.
5. a tire manufacturing method, it is characterised in that this tire manufacturing method has:
Green tire formation process, by the tire building face of the rigid core for building according to any one of Claims 1 to 4
Paste tire component member successively thus form green tire；And
Vulcanization process, puts into sulfuration by the green tire obtained in described green tire formation process together with described rigid core for building
Sulfidization molding is carried out in mould.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014045399A JP6212413B2 (en) | 2014-03-07 | 2014-03-07 | Rigid core for tire formation |
| JP2014-045399 | 2014-03-07 | ||
| PCT/JP2015/056151 WO2015133452A1 (en) | 2014-03-07 | 2015-03-03 | Rigid core for tire formation and tire production method using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106029321A true CN106029321A (en) | 2016-10-12 |
| CN106029321B CN106029321B (en) | 2019-01-04 |
Family
ID=54055258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580009542.8A Active CN106029321B (en) | 2014-03-07 | 2015-03-03 | The rigid core of tire formation and the tire manufacturing method for using the rigid core |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9731463B2 (en) |
| EP (1) | EP3115167B1 (en) |
| JP (1) | JP6212413B2 (en) |
| CN (1) | CN106029321B (en) |
| WO (1) | WO2015133452A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7115078B2 (en) * | 2018-07-05 | 2022-08-09 | 横浜ゴム株式会社 | Rigid core for tire manufacturing and method of manufacturing tire |
| FR3113473B1 (en) * | 2020-08-19 | 2022-07-29 | Michelin & Cie | Curing mold for a tire comprising a sealing element |
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| JP5113861B2 (en) | 2010-02-15 | 2013-01-09 | 住友ゴム工業株式会社 | Pneumatic tire manufacturing method and rigid core used therefor |
| JP5438545B2 (en) | 2010-02-19 | 2014-03-12 | 住友ゴム工業株式会社 | Pneumatic tire manufacturing method |
| JP5667606B2 (en) * | 2012-07-30 | 2015-02-12 | 住友ゴム工業株式会社 | Rigid core for tire formation |
-
2014
- 2014-03-07 JP JP2014045399A patent/JP6212413B2/en active Active
-
2015
- 2015-03-03 WO PCT/JP2015/056151 patent/WO2015133452A1/en active Application Filing
- 2015-03-03 CN CN201580009542.8A patent/CN106029321B/en active Active
- 2015-03-03 EP EP15758152.1A patent/EP3115167B1/en active Active
- 2015-03-03 US US15/119,993 patent/US9731463B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003039435A (en) * | 2001-07-31 | 2003-02-13 | Bridgestone Corp | Tire vulcanizing mold |
| JP2003311741A (en) * | 2002-04-23 | 2003-11-05 | Bridgestone Corp | Tire manufacturing core |
| WO2013001964A1 (en) * | 2011-06-27 | 2013-01-03 | 住友ゴム工業株式会社 | Rigid core and manufacturing method for tire using same |
| CN103459131A (en) * | 2012-01-18 | 2013-12-18 | 住友橡胶工业株式会社 | Rigid core for tire formation |
| WO2013132884A1 (en) * | 2012-03-07 | 2013-09-12 | 住友ゴム工業株式会社 | Rigid core for forming tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015168173A (en) | 2015-09-28 |
| WO2015133452A1 (en) | 2015-09-11 |
| EP3115167A4 (en) | 2017-11-15 |
| EP3115167A1 (en) | 2017-01-11 |
| EP3115167B1 (en) | 2021-01-06 |
| US20170057188A1 (en) | 2017-03-02 |
| US9731463B2 (en) | 2017-08-15 |
| CN106029321B (en) | 2019-01-04 |
| JP6212413B2 (en) | 2017-10-11 |
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